The 3,500 lumen ProTac HL 5-X is available two ways: The ProTac HL 5-X USB is a complete rechargeable system that includes two of our new 18650 USB batteries with an integrated USB charge port. The ProTac HL 5-X includes two CR123A lithium batteries. Both feature MULTI-FUEL innovation that allows them to accept Streamlight’s 18650 USB battery or CR123A lithium batteries, ensuring you’ll always have a beam when you need it.